Home Glossary Substitution request
Short answer
A formal request to use a product different from the one specified, submitted on a substitution form for the architect or engineer to accept or reject before the product is used.
For subcontractors
Check your submittal before the GC does.
Upload your spec section and your package. Deviation Check returns every deviation with the exact spec quote, a severity, and the fix, usually in under five minutes, so the package goes through the first time instead of coming back Revise and Resubmit.
Run a $35 check
See a sample report
$35 per submittal. No subscription, no demo call. Reviewing a sub's package instead? It works the same way.
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